In obsolete terms the difference between revulsion and revellent

is that revulsion is a sudden reaction; a sudden and complete change of the feelings while revellent is causing revulsion; revulsive.

As a noun revulsion

is abhorrence, a sense of loathing, intense aversion, repugnance, repulsion, horror.

As an adjective revellent is

causing revulsion; revulsive.

As adjectives the difference between revulsive and revellent

is that revulsive is causing revulsion while revellent is causing revulsion; revulsive.

As a noun revulsive

is that which causes revulsion; a revulsive remedy or agent.

In physics terms the difference between pressure and piezopolymer

is that pressure is the amount of force that is applied over a given area divided by the size of this area while piezopolymer is a piezoelectric polymer (that can reversibly convert pressure to electricity.

As nouns the difference between pressure and piezopolymer

is that pressure is a pressing; a force applied to a surface while piezopolymer is a piezoelectric polymer (that can reversibly convert pressure to electricity.

As a verb pressure

is to encourage or heavily exert force or influence.

As nouns the difference between electricity and piezopolymer

is that electricity is the study of electrical energy; the branch of science dealing with such phenomena while piezopolymer is a piezoelectric polymer (that can reversibly convert pressure to electricity.

As a verb obey

is to do as ordered by (a person, institution etc), to act according to the bidding of.

As a noun obeyer is

one who obeys.

As adjectives the difference between inflammable and combustious

is that inflammable is capable of burning; easily set on fire while combustious is inflammable; combustible.

As adjectives the difference between combustible and combustious

is that combustible is capable of burning while combustious is inflammable; combustible.

As a noun combustible

is a material that is capable of burning.

As nouns the difference between energy and phonobreather

is that energy is the impetus behind all motion and all activity while phonobreather is (physics) a non-linear wave that can transport energy in a coupled oscillator chain by means of a phase-torsion mechanism.

As nouns the difference between abeyance and obeyance

is that abeyance is expectancy; condition of ownership of real property being undetermined; lapse in succession of ownership of estate, or title while obeyance is obedience.

As nouns the difference between piezoelectric and piezopolymer

is that piezoelectric is a piezoelectric material or device while piezopolymer is (physics) a piezoelectric polymer (that can reversibly convert pressure to electricity).

As an adjective piezoelectric

is of or relating to piezoelectricity.